301-20PP is an initiator (20% masterbatch for mulation on polyproylene beads) for the production of controlled rheology polypropylene (CR-PP).

Specifications

Appearance	White beads
Total active oxygen	1.34-1.63 %

Characteristics

Bulk density

421 kg/m³

Applications

301-20PP is an efficient peroxide formulation for the production of controlled rheology polypropylene (CR-PP) in an extrusion process in the temperature range of 200-250°C. This beads form masterbatch of the liquid 301-20PP allows a more accurate dosage of the peroxide to the polymer. Also a more homogeneous distribution of the peroxide throughout the polymer is of advantage. Using the beads form formulation rather than the liquid form results in a better control of the visbreaking process. 301-20PP allows polypropylene producers great flexibility in controlling a polymer’s Melt Flow Index (MFI). Small changes in either peroxide concentration or process temperature can produce significantly different MFI’s.

Half-life data

The reactivity of an organic peroxide is usually given by its half-life (t1/2) at various temperatures. The half-life of 301-20PP in chlorobenzene is:

0.1 hr	170°C
1 hr	146°C
10 hr	125°C
Formula 1	kd = A·e-Ea/RT
Formula 2	t½ = (ln2)/kd
Ea	150.23 kJ/mole
A	1.02E+15 s-1
R	8.3142 J/mole·K
T	(273.15+°C) K

Thermal stability

Organic peroxides are thermally unstable substances which may undergo self-accelerating decomposition. The lowest temperature at which self-accelerating decomposition may occur with a substance in the packaging as used for transport is the Self-Accelerating Decomposition Temperature (SADT). The SADT is determined on the basis of the Heat Accumulation Storage Test.

SADT	90°C
Method	The Heat Accumulation Storage Test is a recognized test method for the determination of the SADT of organic peroxides (see Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria – United Nations, New York and Geneva).

Storage

Due to the relatively unstable nature of organic peroxides a loss of quality can be detected over a period of time. To minimize the loss of quality, Thousands Chemicals recommends a maximum storage temperature (Ts max.) for each organic peroxide product.

Ts max.	40°C
Note	When stored according to these recommended storage conditions, 301-20PP will remain within the Nouryon specifications for a period of at least 12 months after delivery.

Packaging and transport

The standard packaging is a 10 kg cardboard box. Both packaging and transport meet the international regulations. For the availability of other packed quantities contact your Nouryon representative. We have the permits required to transport 301-20PP as a non-dangerous good for all regulations except air.

Safety and handling

Keep away from open fire, sparks and other sources of heat or ignition. Avoid contact with reducing agents (e.g. amines), acids, alkalis and heavy metal compounds (e.g. accelerators, driers and metal soaps). Please refer to the Safety Data Sheet (SDS) for further information on the safe storage, use and handling of 301-20PP. This information should be thoroughly reviewed prior to acceptance of this product.

Major decomposition products

Carbon dioxide, Ethane, Methane, Ethyl acetate, Methyl ethyl ketone, Methyl acetate